Sybase ASE allows to create a primary key for a
table. After selecting the table columns, DtSQL can generate and
execute the SQL to create the primary key.

Sample :
ALTER TABLE
"dbo"."test_table"
ADD
PRIMARY KEY ( b, c )

Create Foreign Key

Sybase ASE allows to create a foreign key for a
table to reference to another table. After selecting the table columns
and referenced table columns, DtSQL can generate and execute the
SQL to create the foreign key.

Sybase ASE allows to create an unique constraint
for a table columns. After entering the unique constraint name and
selecting table columns, DtSQL can generate and execute the SQL
to create the unique constraint.